Hoisting mechanism.



W. P. CANTWELL. HDISTING MECHANISM.

APPLICATION FILED NOV. 1. 1911.

, Patented Oct. 8,1918

2 SHEETS--SHEET ml nuns pp": ca. rnomum.wummnl. nL i.

P. 'CANTWELL, 0F LIMA, OHIO.

I-IOISTING MECHANISM.

c i 1 Specification of Letters Patent.

Patented Oct. 8, 1918.

application filed November 7, 1917. Serial No. 200,795.

To all whom) it may concern;

Be it known that I, WILLIAM P. CANT- WELL, a citizen of the UnitedStates, residing at Lima, in the county of Allen and State of Ohio, haveinvented certain new and useful Improvements in Hoisting 'Mechanism, ofwhich the following is a specification.

My invention relates to hoisting appara tus for use in conveyingmaterial, in the construction of a house. or building, while notnecessarily restricted to this use.

As is well knownfin the; construction of tall buildings, itisicustoma'ry to erect a tower, which must ordinarily extend above thetop of the building ,This tower is gen erally formed of wood or lumberand is expensive to construct. fAfter the building is completed, thetower must be taken down or wrecked, which entails a further expense. Itis found that "the materialof the tower is to a considerableext'entdestroyed or greatly injured by taking the samedown. In con nection withthis form oftower, it is the common practice to operate a hoist orelevator, the same being moved by means'of an engine. i 1

My invention has for its object to provide a simple and strongsupporting structure, adapted. to take the place of the ordinary tower,the supporting structure being formed in sections which may-be readilyassembled and separated, without liabilityof injury to such arts, j

A urthe'r object of the invention is to provide means whereby abucket orbuckets, con taining the'materialfto be elevated, may be raised to adesired height, in proximity to a latform or the like, without liabilityof inury to the platform and shifted laterally to discharge into a chuteor the like, arranged near or atthe platform.- I a A furtherobjeot ofthe invention is to provide a supporting structure,- so constructed thata platform or'other support may be conveniently connected therewith, andarranged at desired heights.

Other objects and'advantagesof the invention will be apparent during thecourse of the following description.

In-the accompanying drawings forming a part of this specification and inwhich like numerals are employed to designate like parts throughout thesame,

Figure 1 is a side elevation of apparatus embodying my invention,

Fig. 2 is an edge elevation of the same,

Fig.3 is a horizontal sectional view taken on'lin'e 3 -8 of Fig. 1,

. Fig. 4 is an enlarged fragmentary side elevation of the upper portionof the apparatus, K

Fig. 5 is an edge elevation of the same,

Fig. 6 is a plan view of the swinging beam,

Fig. 7 is a side elevation of a power operated drum to operate thehoisting buckets,

Fig. 8 is a similar view of a brake con trolled drum for controlling theswinging movement of the pivoted beam, and,

Fig. 9 is a horizontal sectional view taken on line 9-9 of Fig. 1.

In the drawings, wherein for the purpose of illustration isshown apreferred embodiment of my invention, the numeral 10 designates thesupporting structure, as a whole, which may be formed in a plurality ofsec tions 11. Each section 11 comprises a pair of flat bars 12,preferably formed of steel or iron, and provided with outwardlyextending reinforcing ribs or flanges 13. Between the flanges 13, thebars '12 are provided with pairs of vertically spaced openings 14:. The

ars 12 in each section 11 are connected between their' ends by atransverse bolt 15, passing through a pair of the openings 14, and aspacing element or sleeve 16, as clearly shown in Fig. 9.

The upper section 11 is arranged upon the lower section 11, in end toend relation, and is securely bound thereto, by means of angleironstraps 17, attached to the flanges and the bars 12 by means of bolts'18or the like.

The lower ends of thelower section 11 is provided with a base 19,rigidly secured to the lower ends of the bars 12, and adapted to beemployed in anchoring or securing the lowermost section 11' to asuitable foundation.

The numeral 20 designates guy-wires, at-

tached to the upper portion of the upper section 11, as shown at 21, andto the ground, at suitable distance from the base 19. It is ob viousthat any suitable number of these guywires may be cn'iployed, and theremay be guy-wires used in connection with each section 11, if foundadvantageous.

The numeral 22 designates a swinging beam which, as shown in Fig. 6, isprovided between its ends with aperturcd trunnions or spacing elements23, for the reception of a pivot element or bolt 24-, inserted in atransverse pair of openings ll, of the upper sections 51L Itv is to beunderstood that the swinging beam 22 is vertically adjustable and forthis purpose the 'bolt 24 may be insert-ed in any selected .pair oftransverse openings 14;, in either section ll, depending upon the heightthat it is desired to arrange the same.

Connected with the opposite ends of the beam 22 is a cable 25, extendingdownwardly to pass about grooved pulleys 26-, which are suitably pivotednearan d spaced from the foundation 19. The cable 25 is then passedabout suitably pivoted horizontal grooved pulleys 27- and extends beyondthese-me to be vvound upon a single drum 28, :Eor a number of turns to'prevent'slipping thereon. i The rotation of tliis drum is controlled bymeans or a brake 29, of any well known ranged or preferred construction.

Connected Withtheswinging beam 22 inwardly of and near the ends thereof,are depending brackets 29, within which are pivoted grooved pulleys 30,having a cable 31 passed thereover. .The free ends of this cable areconnected with buckets 32 or other load ,liolding apparatus. The cable31 is extended. inwardly beyond the grooved pulleys 30 and ,portions 33of the cable are passed about grooved pulleys 34, shown more cleanlyinFig'; -5. Tl1ese grooved pulleys are rotatable upon a bolt .35, passedthrough a. air oftlleopenings T14. Theportions 33 o the ,pulle thenextend downwardlyin avertical irec'tion between the bars 12 and arepassed under vertical grooved pulleys 36,. ivoted upon a transverseshaft-37 .suitab 37 connected with the lower ends of the lowermost barsl2. The portions 33 of the cable are then extended forwardly and arewound about a power driven drum 37 for a number of turns topreventslipping. This drum may be driven by anvor iinary steam engine orthe like and is equipped with the usual brake inec'ha .nisrn .38,.;forstonning the drum.

Disposed near the uppermost section 11 of the support, at a desiredvertical point, and preferably surrounding three sides thereof, is arailed platform '39, which has its longitudinal portion a-m'an ed .u-ponand supported by a horizontal .ro d 40, passing through a pair ofthe-openings 14. Pivot/ed to the transverse portions 41 of the.pla'tform as shown at 42, are anfular'l .ar-

liars 43, the lower ends 0 win are overlapped, a ')ertured, and arrangedbe tween the bars 12, for the reception of a bolt 4.4, passed throughtwo of the openings 14. It is obvious that the platform will be socurelyheld to the support section 1.1 and that as the rod ll) and the bolt 4%can be readily removed li'ron'i the openings 14, this platform may bevertically adjusted, and secured to the support section at any desiredvertical position.

The numeral 45 designates a. pair of hoppers, for the reception ofconcrete or the like, which are arranged near and above the platform 39,and secured to the bars 12, by any suitable means. Tl'iese hoppers arcconnected with pipes 46, discharging into a. common pipe or flue 47,which may be employed to convey or conduct the concrete or like materialto any portion of the building under construction as is well known.

The operation of the ap 'iaratus is as follows:

With the parts of the apparatus arranged as shown in Fig. l, the upperbucket is loaded and is now ready to be dumped into the correspondinghopper 45. This being the case, the drum 2'8is allowed to slowly turn orrevolve, so that the swinging beam 22 may assume an inclined position,with its ends to the right-arranged lowermost. This movement will causethe bucket 32 to the right to travel inwardly toward the hopper 45 tothe right, whereby its contents may be conveniently emptied into thishopper. The drum 28 is now held ngainst turning movement by the brakeinechanisn'i. and the beam 22 is t-cn'iporarijly locked in the inclinedposition. When the upper bucket 32 is emptied and the lower bucket 32 isfilled or being filled, upon the drum being "slightly released, forgradual turn'ing movement, the lower bucket will restore the beam 22 tothe normal horizontal positiom at which time the drum is again lockedagainst turning; movement thereby retaining the beam '22 in thehorizontal position. The cable 31 is now moved in an opposite directionto elevate ,the bucket 32 to the left and lower the bucket-32 to theright, the bucket at the left moving outwardly of the platform 39 andnot injuring the same. When the bucket to the left is in'th'e upperposition, the beam 22 is then swung in an opposite direction, to bringthis bucket in proximity "to its "hopper 45 so that the contents thereofmay be discharged into this hopper. The gfurther operation ofthe-apparatus is believed to be obvious and will therefore not bestated.

Itis to be understood that the form of m invention herewith shown anddescribed is to be taken as a preferred example of the SH m and that vaus 1Ifl112 i1 hap si a r nge n o Pa may er sort'ed to without departingfrom the spirit In apparatus of the e scribed, the yeoriibinatipniwitha? pec d pa 'r vf dpem gs,

'' I adapted idrerrangemenb tween bar s;

ta y.. n e e b en its ends w ith th vsiz pporting' structure 1d] adaptedto hdrmally .assumean eppi'oxietely hQI'iZOfltiiPPOSit-ldll "a. cableconnect with the ,endpbrtions .of the beam, to nor- 4 beam" inflthe' appro'ximately 'ngfe'nd {to releasethe samej e ends may; alternately as;-

"qpositions'y a: drum receiving verse beam adaptedfdr the beams ;v 'a Ipivot element comiected the been! agd. ad;

gwinging movement'ief the beam; m','g".devicees, connected of thebeamnPo t o scribed; the combinatio with structure; comprisingypw ii p langementbet ,th iceble thereon 'to' centrol its moveinentif bT'device'sf connectedljwith the on? of the beam a ndedaptswmg said end"portions tore oembinatiomwi th a supportm y,

, mum; of a beam pivqtallyf connecte structure, a cable jean he cablethereen to neutral?- I ul leys connected: with the:v f

